Development of new active nanocomposite packaging films containing polyhedral oligomeric silsesquioxane for walnut (Juglans regiaL.) kernel packaging. Issue 3 (2nd December 2020)

• Record Type: Journal Article
• Authors: Kavuncuoglu, Hatice; Yalcin, Hasan; Dogan, Mehmet
• Is Part Of: Packaging technology and science. Volume 34:Issue 3(2021)
• Page Start: 151
• Page End: 160
• Publication Date: 2020-12-02
• Subjects: lipid oxidation -- packaging -- polyhedral oligomeric silsesquioxane -- shelf life -- walnut (Juglans regiaL.) kernel oil; Packaging -- Periodicals; 688.8
• DOI: 10.1002/pts.2548
• Languages: English
• ISSNs: 0894-3214

Abstract

Abstract : Active nanocomposite films made from low‐density polyethylene (LDPE) and polyhedral oligomeric silsesquioxane (POSS) were prepared as of food packaging material for walnut kernels ( Juglans regia L .) oil protection against lipid oxidation. N ‐Phenylaminopropyl‐POSS (NP‐POSS), octaammonium‐POSS (QA‐POSS) and methacryl‐POSS (M‐POSS) were utilized as convenient additives. Intact and crushed walnut kernels were stored in conditions set to accelerate oxidation (24 h of light, 38°C, and 33% RH). On the 14th day, peroxide value (PV) was determined as 14.13 meq O2 /kg in intact walnut kernel oil (WKO), whereas the PV of walnuts was measured as 5.94 meq O2 /kg and 7.95 meq O2 /kg wrapped with 5 wt% NP‐POSS and 3 wt% QA‐POSS containing the film, respectively. At the end of the storage, K 232 values were measured as 4.42 and 6.12 packaged with control films, whereas K 232 values ranged 2.72 and 3.14 in samples packaged with 5 wt% NP‐POSS. Similarly, K 232 value of WKO wrapped with QA‐POSS containing films was detected as 2.89 and 3.20 in intact and crushed walnut samples, respectively. The p ‐anisidine value of WKO wrapped with pure LDPE reached 4.86 and 7.33 for WKO obtained from the intact and crushed walnut kernel, and the lowest p ‐anisidine values observed intact (2.07) and crushed (3.84) samples of packaged with 5 wt% NP‐POSS, respectively. The results have shown that novel nanocomposite food packaging films, including NP‐POSS and QA‐POSS, for vacuum‐packed walnut kernels are sufficient to protect against oxidation. Abstract : Active nanocomposite films made from LDPE and POSS nanoparticles.The best antioxidant activity is determined in NP‐POSS including films.QA‐POSS and NP‐POSS additive for LDPE packaging film could have potential for protect lipid oxidation.